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From 5bc830089553a445952d69a73e0a9f5fdf9d0f19 Mon Sep 17 00:00:00 2001
From: Victoria Milhoan <vicki.milhoan@freescale.com>
Date: Wed, 12 Nov 2014 09:58:24 -0700
Subject: [PATCH] MLK-9769-9 crypto: caam - adjust RNG timing to support more
devices
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Adjust RNG timing parameters to support more i.MX6 devices.
Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
Signed-off-by: Dan Douglass <dan.douglass@freescale.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
(cherry picked from commit 57eabb638430ec68490d192738640b95a3507b1d)
Changed commit headline prefix.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
---
drivers/crypto/caam/ctrl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -364,8 +364,8 @@ static void kick_trng(struct platform_de
wr_reg32(&r4tst->rtsdctl, val);
/* min. freq. count, equal to 1/4 of the entropy sample length */
wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2);
- /* disable maximum frequency count */
- wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
+ /* max. freq. count, equal to 16 times the entropy sample length */
+ wr_reg32(&r4tst->rtfrqmax, ent_delay << 4);
/* read the control register */
val = rd_reg32(&r4tst->rtmctl);
start_rng:
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